Post by habiba123820 on Nov 2, 2024 2:20:51 GMT -5
Earlier, the SERVER MALL blog published a review of the Proxmox hypervisor , and it was very popular with readers, so we decided to launch a series of reviews.I'll startI will continue with the popular VMware ESXi (Elastic Sky X Integrated), and later I will write about other hypervisors: KVM (Kernel-based Virtual Machine) and Hyper-V. Although I will also write about them in the article - I will compare them with ESXi.
So, let's start our review of one of the leading hypervisors on the market.
What is VMware ESXi: about the hypervisor and licenses
As usual, let's start with the base.
VMware ESXi is a Type 1 hypervisor that runs on its own kernel — without first running an operating system like Windows or Linux. By the way, the old ESX ran the Linux kernel first. In English, Type 1 wordpress web design agency hypervisors are called “Bare Metal,” which literally translates as “bare metal.”
A small digression. A hypervisor is software that allows one physical server/computer (host system) to run multiple virtual servers/computers (virtual machines, VM) with different and/or the same operating systems in parallel. VMs created by a hypervisor are isolated and independent from each other, as if they were different physical devices. A user working remotely on a VM may not even know that it is a VM.
A simple analogy from life. Imagine that the owner of a business, for example a hotel (host system), wants to use the rooms as efficiently as possible. He hires an efficient manager (hypervisor), who manages all the bookings, provision, preparation of the rooms for stay, hires other staff (other software), so that each guest (user) checks into a clean room (virtual machine) with all the amenities (dedicated host resources). The management, manager and staff do not care where the guest comes from, what language he speaks (different operating systems). A Russian (Astra Linux), a Chinese (Deepin), an American (Windows) and a European (openSUSE) can live in neighboring rooms without interfering with each other. The maximum they will cross paths in the elevator or at the exit from the hotel (common network channel of the host).
That is, the whole idea with the hypervisor is needed to use the server hardware more efficiently, perform incompatible software tasks and improve the convenience of administrative tasks. All this increases reliability, improves RTO/RPO indicators (speed and quality of recovery after failures), saves time for system administrators on deploying and collapsing virtual machines, and reduces the total cost of ownership.
It is quite difficult to effectively load a server that is working on one or a couple of tasks. At times it will be idle, but with virtualization you can create virtual machines, effectively load them with tasks and level out downtime by distributing the load and tasks between different operating systems.
So, let's start our review of one of the leading hypervisors on the market.
What is VMware ESXi: about the hypervisor and licenses
As usual, let's start with the base.
VMware ESXi is a Type 1 hypervisor that runs on its own kernel — without first running an operating system like Windows or Linux. By the way, the old ESX ran the Linux kernel first. In English, Type 1 wordpress web design agency hypervisors are called “Bare Metal,” which literally translates as “bare metal.”
A small digression. A hypervisor is software that allows one physical server/computer (host system) to run multiple virtual servers/computers (virtual machines, VM) with different and/or the same operating systems in parallel. VMs created by a hypervisor are isolated and independent from each other, as if they were different physical devices. A user working remotely on a VM may not even know that it is a VM.
A simple analogy from life. Imagine that the owner of a business, for example a hotel (host system), wants to use the rooms as efficiently as possible. He hires an efficient manager (hypervisor), who manages all the bookings, provision, preparation of the rooms for stay, hires other staff (other software), so that each guest (user) checks into a clean room (virtual machine) with all the amenities (dedicated host resources). The management, manager and staff do not care where the guest comes from, what language he speaks (different operating systems). A Russian (Astra Linux), a Chinese (Deepin), an American (Windows) and a European (openSUSE) can live in neighboring rooms without interfering with each other. The maximum they will cross paths in the elevator or at the exit from the hotel (common network channel of the host).
That is, the whole idea with the hypervisor is needed to use the server hardware more efficiently, perform incompatible software tasks and improve the convenience of administrative tasks. All this increases reliability, improves RTO/RPO indicators (speed and quality of recovery after failures), saves time for system administrators on deploying and collapsing virtual machines, and reduces the total cost of ownership.
It is quite difficult to effectively load a server that is working on one or a couple of tasks. At times it will be idle, but with virtualization you can create virtual machines, effectively load them with tasks and level out downtime by distributing the load and tasks between different operating systems.
